Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 04:40

General

  • Target

    c4ffcd2bd37b1c2d3152f4bbde0a0d6a.exe

  • Size

    11.5MB

  • MD5

    c4ffcd2bd37b1c2d3152f4bbde0a0d6a

  • SHA1

    0139695f29932d6a4ca7f04c6cb9a42dbfeeca70

  • SHA256

    0ed2549b5144673e94c79df078daa20e3a07b8d90edcd7422bafe216512bedca

  • SHA512

    d6e24017484c9781c31646c41f1b7307b7a8c2755201e894a15d0e620e1384be9e5b0862873f7271f5481fb7b9ad2b37804f07b1133ed512b7a5cc7da81d91c1

  • SSDEEP

    24576:1Uqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmW:1F15

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4ffcd2bd37b1c2d3152f4bbde0a0d6a.exe
    "C:\Users\Admin\AppData\Local\Temp\c4ffcd2bd37b1c2d3152f4bbde0a0d6a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ldrqqgny\
      2⤵
        PID:1092
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ivrhpwrb.exe" C:\Windows\SysWOW64\ldrqqgny\
        2⤵
          PID:1408
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ldrqqgny binPath= "C:\Windows\SysWOW64\ldrqqgny\ivrhpwrb.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4ffcd2bd37b1c2d3152f4bbde0a0d6a.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2592
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ldrqqgny "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3000
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ldrqqgny
          2⤵
          • Launches sc.exe
          PID:2252
        • C:\Windows\SysWOW64\netsh.exe
          "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
          2⤵
          • Modifies Windows Firewall
          PID:2668
      • C:\Windows\SysWOW64\ldrqqgny\ivrhpwrb.exe
        C:\Windows\SysWOW64\ldrqqgny\ivrhpwrb.exe /d"C:\Users\Admin\AppData\Local\Temp\c4ffcd2bd37b1c2d3152f4bbde0a0d6a.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2388

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\ivrhpwrb.exe

              Filesize

              13.5MB

              MD5

              940fe0b10d13f73041f51dc1a6e0b643

              SHA1

              582aac5b5e0693102bd3278b2596812e1c141b68

              SHA256

              b38d751c3e6462d6a112c32e7d23f9b173c8533cb3e297c4bcf0ff597d0315ac

              SHA512

              7cc5addf4ba5a20597f5d8add5231d9f5edf811d810883b784746014540281657bb39a6329ffdc5e9e36774176055d0733c3e8ec70731059119601fd8a8fe498

            • memory/2020-1-0x0000000000630000-0x0000000000730000-memory.dmp

              Filesize

              1024KB

            • memory/2020-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2020-3-0x0000000000400000-0x0000000000468000-memory.dmp

              Filesize

              416KB

            • memory/2020-6-0x0000000000400000-0x0000000000468000-memory.dmp

              Filesize

              416KB

            • memory/2020-7-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2388-12-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2388-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2388-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2388-19-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2388-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2388-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2708-11-0x0000000000400000-0x0000000000468000-memory.dmp

              Filesize

              416KB

            • memory/2708-10-0x0000000000620000-0x0000000000720000-memory.dmp

              Filesize

              1024KB

            • memory/2708-17-0x0000000000400000-0x0000000000468000-memory.dmp

              Filesize

              416KB